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Wester A, Hansen AM, Hansen PR, Franzyk H. Perfluoro-tert-butanol for selective on-resin detritylation: a mild alternative to traditionally used methods. Amino Acids 2021; 53:1455-1466. [PMID: 34410506 DOI: 10.1007/s00726-021-03059-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Accepted: 08/01/2021] [Indexed: 10/20/2022]
Abstract
Solid-phase synthesis of cyclic, branched or side-chain-modified peptides typically involves introduction of a residue carrying a temporary side-chain protecting group that undergoes selective on-resin removal. In particular, Nα-Fmoc-Nε-(4-methyltriphenylmethyl) (Mtt)-protected lysine and its shorter analogues are commercially available and extensively used in this context. Nevertheless, rapid reliable methods for on-resin removal of Mtt groups in the presence of tert-butyloxycarbonyl (Boc) groups are needed. Current commonly used conditions involve low concentrations (1-3%) of trifluoroacetic acid (TFA) in dichloromethane, albeit adjustment to each specific application is required to avoid premature removal of Boc groups or cleavage from the linker. Hence, a head-to-head comparison of several deprotection conditions was performed. The selected acids represent a wide range of acidity from TFA to trifluoroethanol. Also, on-resin removal of the N-(4-methoxytriphenylmethyl) (Mmt) and O-trityl groups (on serine) was investigated under similar conditions. The mildest conditions identified for Mtt deprotection involve successive treatments with 30% hexafluoroisopropanol (HFIP) or 30% perfluoro-tert-butanol [(CF3)3COH] in dichloromethane (3 × 5 or 3 × 15 min, respectively), while 30% HFIP, 30% (CF3)3COH, or 10% AcOH-20% trifluoroethanol (TFE) in CH2Cl2 (3 × 5 min) as well as 5% trichloroacetic acid in CH2Cl2 (3 × 2 min) enabled Mmt removal. Treatment with 1% TFA with/without 2% triisopropylsilane added (3 × 5 min), but also prolonged treatment with 30% (CF3)3COH (5 × 15 min), led to selective deprotection of an O-Trt group on a serine residue. In all cases, the sequences also contained N-Boc or O-tBu protecting groups, which were not affected by 30% HFIP or 30% (CF3)3COH even after a prolonged reaction time of 4 h. Finally, the optimized conditions involving HFIP or (CF3)3COH proved applicable also for selective deprotection of a longer resin-bound peptide [i.e., Ac-Gly-Leu-Leu-Lys(Mtt)-Arg(Pbf)-Ile-Lys(Boc)-Ser(tBu)-Leu-Leu-RAM-PS] as well as allowed for an almost complete deprotection of a Dab(Mtt) residue.
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Affiliation(s)
- Anita Wester
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Anna Mette Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Paul R Hansen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark
| | - Henrik Franzyk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Jagtvej 162, 2100, Copenhagen, Denmark.
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Li X, Li J, Hao S, Han A, Yang Y, Fang G, Liu J, Wang S. Enzyme mimics based membrane reactor for di(2-ethylhexyl) phthalate degradation. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123873. [PMID: 33264945 DOI: 10.1016/j.jhazmat.2020.123873] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 06/12/2023]
Abstract
Di(2-ethylhexyl) phthalate (DEHP), the most abundantly used plasticizer, was considered to be a hazardous chemical that was difficult to be degraded naturally. In this study, inspired by the "catalytic triad'' in serine proteases, an enzyme mimic material was developed by combining the proteases's active sites of serine, histidine and aspartate (S-H-D) with the self-assembling sequence of LKLKLKL and the aromatic group of fluorenylmethyloxycarbonyl (Fmoc). By mixing the monomer of peptides containing separate S, H and D residues with a ratio of 2:1:1, the enzyme mimics were found to co- assemble into nanofibers (Co-HSD) and showed the highest activity towards DEHP degradation because of the synergistic effects of active sites, orderly secondary structure and stable molecular conformation. To further improve ability and applicability, the high active mimetic enzyme was immobilized onto regenerated cellulose (RC) membranes for DEHP degradation in a continuous recycling mode. The RC membranes were first functionalized by the NaIO4 oxidation method to form aldehyde groups and then conjugated with the enzyme mimics via Schiff-base reaction. As a biocatalytic membrane, this membrane could not only effectively degrade DEHP, but also showed good stability, thus establishing a promising biomaterial for large scale biodegradation of DEHP in water decontamination and liquid food depollution.
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Affiliation(s)
- Xia Li
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Jianpeng Li
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, 250353, PR China
| | - Sijia Hao
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Ailing Han
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Yayu Yang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China
| | - Jifeng Liu
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China.
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety, Tianjin University of Science and Technology, Tianjin, 300457, PR China; Research Center of Food Science and Human Health, School of Medicine, Nankai University, Tianjin, 300071, PR China.
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Li X, Li J, Hao S, Han A, Yang Y, Luo X, Fang G, Liu J, Wang S. Enzyme mimics based on self-assembled peptides for di(2-ethylhexyl)phthalate degradation. J Mater Chem B 2020; 8:9601-9609. [DOI: 10.1039/d0tb01931c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Enzyme mimics inspired by serine proteases are developed through self-assembled peptides to degrade di(2-ethylhexyl)phthalate (DEHP).
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Affiliation(s)
- Xia Li
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Jianpeng Li
- School of Food Science and Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Ji’nan
- P. R. China
| | - Sijia Hao
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Ailing Han
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Yayu Yang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Xiaoyu Luo
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Guozhen Fang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Jifeng Liu
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
| | - Shuo Wang
- State Key Laboratory of Food Nutrition and Safety
- Tianjin University of Science and Technology
- Tianjin 300457
- P. R. China
- Research Center of Food Science and Human Health
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Nothling MD, Xiao Z, Bhaskaran A, Blyth MT, Bennett CW, Coote ML, Connal LA. Synthetic Catalysts Inspired by Hydrolytic Enzymes. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03326] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mitchell D. Nothling
- Department of Chemical and Biomolecular Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Zeyun Xiao
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P. R. China
| | - Ayana Bhaskaran
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Mitchell T. Blyth
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Christopher W. Bennett
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Michelle L. Coote
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Luke A. Connal
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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Pícha J, Fabre B, Buděšínský M, Hajduch J, Abdellaoui M, Jiráček J. Tri-Orthogonal Scaffolds for the Solid-Phase Synthesis of Peptides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jan Pícha
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Benjamin Fabre
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Miloš Buděšínský
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Jan Hajduch
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Mehdi Abdellaoui
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
| | - Jiří Jiráček
- Institute of Organic Chemistry and Biochemistry; Czech Academy of Sciences, v.v.i.; Flemingovo n. 2 16610 Praha 6 Czech Republic
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Mikkelsen RJT, Grier KE, Mortensen KT, Nielsen TE, Qvortrup K. Photolabile Linkers for Solid-Phase Synthesis. ACS COMBINATORIAL SCIENCE 2018; 20:377-399. [PMID: 29863839 DOI: 10.1021/acscombsci.8b00028] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Photolabile linkers are the subjects of intense research because they allow the release of the target molecule simply by irradiation. Photochemical release of synthesis products is often facilitated without additional reagents under mild reaction conditions, which may even be environmentally friendly and appealing in the context of greener chemistry. The mild conditions also allow for applications of released material in subsequent biological screening experiments, where contamination with cleavage reagents would be detrimental. This Review pays attention to the increasing number of photolabile linkers developed for solid-phase synthesis and release and covers: (i) o-nitrobenzyloxy linkers, (ii) o-nitrobenzylamino linkers, (iii) α-substituted o-nitrobenzyl linkers, (iv) o-nitroveratryl linkers, (v) phenacyl linkers, (vi) p-alkoxyphenacyl linkers, (vii) benzoin linkers, (viii) pivaloyl linkers, and (ix) other photolabile linkers.
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Affiliation(s)
- Remi J. T. Mikkelsen
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Katja E. Grier
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Kim T. Mortensen
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
| | - Thomas E. Nielsen
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
- Singapore Centre for Environmental Life Sciences Engineering, Nanyang Technological University, 637551, Singapore
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Katrine Qvortrup
- Department of Chemistry, Technical University of Denmark, DK-2800 Kongens Lyngby, Denmark
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Guest Covalent Capture by a Host: A Biomimetic Strategy for the Selective Functionalization of a Cavity. Chemistry 2012; 19:642-53. [DOI: 10.1002/chem.201202391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 09/24/2012] [Indexed: 11/07/2022]
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Baker MB, Ghiviriga I, Castellano RK. Molecular multifunctionalization via electronically coupled lactones. Chem Sci 2012. [DOI: 10.1039/c2sc00943a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Kuchelmeister HY, Schmuck C. An Efficient Synthesis of an Orthogonally Protected Aromatic Diamine as Scaffold for Tweezer Receptors with Two Different Arms. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900536] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Two-colour screening in combinatorial chemistry: prospecting for enantioselectivity in a library of steroid-based receptors. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Van der Plas SE, Van Hoeck E, Lynen F, Sandra P, Madder A. Towards a New SPE Material for EDCs: Fully Automated Synthesis of a Library of Tripodal Receptors Followed by Fast Screening by Affinity LC. European J Org Chem 2009. [DOI: 10.1002/ejoc.200801290] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Self-assembled gold nanocrystal micelles act as an excellent artificial nanozyme with ribonuclease activity. J Biol Inorg Chem 2009; 14:653-62. [DOI: 10.1007/s00775-009-0478-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Accepted: 02/05/2009] [Indexed: 10/21/2022]
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Albada HB, Liskamp RMJ. TAC-Scaffolded Tripeptides as Artificial Hydrolytic Receptors: A Combinatorial Approach Toward Esterase Mimics. ACTA ACUST UNITED AC 2008; 10:814-24. [DOI: 10.1021/cc800065a] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- H. Bauke Albada
- Medicinal Chemistry and Chemical Biology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
| | - Rob M. J. Liskamp
- Medicinal Chemistry and Chemical Biology, Utrecht Institute of Pharmaceutical Sciences, Faculty of Science, Utrecht University, P.O. Box 80082, 3508 TB Utrecht, The Netherlands
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Guarise C, Zaupa G, Prins LJ, Scrimin P. Functionalization of Tripodal Scaffold Molecules on Solid Support. European J Org Chem 2008. [DOI: 10.1002/ejoc.200800259] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Van der Plas SE, Gea A, Figaroli S, De Clercq PJ, Madder A. Synthesis of a Tripodal Scaffold for Solid Phase Synthesis of Artificial Receptors. European J Org Chem 2008. [DOI: 10.1002/ejoc.200701104] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Tatsis VA, Stavrakoudis A, Demetropoulos IN. Molecular Dynamics as a pattern recognition tool: An automated process detects peptides that preserve the 3D arrangement of Trypsin's Active Site. Biophys Chem 2008; 133:36-44. [DOI: 10.1016/j.bpc.2007.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2007] [Revised: 11/24/2007] [Accepted: 11/26/2007] [Indexed: 11/25/2022]
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Catry MA, Madder A. Synthesis of functionalised nucleosides for incorporation into nucleic acid-based serine protease mimics. Molecules 2007; 12:114-29. [PMID: 17693958 PMCID: PMC6149322 DOI: 10.3390/12010114] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 01/29/2007] [Accepted: 01/30/2006] [Indexed: 11/17/2022] Open
Abstract
The synthesis of nucleosides modified with an extra imidazole, carboxyl and hydroxyl group is described. These nucleosides can be incorporated into an oligonucleotide duplex, thus generating a novel type of serine protease mimic.
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Affiliation(s)
| | - Annemieke Madder
- Ghent University, Department of Organic Chemistry, Laboratory for Organic and Biomimetic Chemistry, Krijgslaan 281 (S4), B-9000 Gent, Belgium
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